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hoa [83]
3 years ago
10

is there difference if you pull a block down a hill or if you push a block down a hill. Or if you push a block up a hill or pull

it up ? For example if you PULL a block down a hill it would be F+Fg||-fk =ma (the force you are using +Fsinθ - kinetic friction =ma. Would this change if you PUSH the block down? ​
Physics
1 answer:
Afina-wow [57]3 years ago
8 0

Answer:

Yes it will be changed

Explanation:

Lifting up requires potential energy while dropping down requires kinetic, both will have different equations

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Svetlanka [38]

Answer: C Plane

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koban [17]

Answer:

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2 years ago
Light travels from medium X into medium Y. Medium Y has a higher index of refraction. Consider each statement below:(i) The ligh
ahrayia [7]

Answer:

i) FALSE,  ii) TRUE,  iii) FALSE, iv)  FALSE

Explanation:

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where v is the speed of light in the material medium.

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          n₁ sin θ₁ = n₂ sin θ₂

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          nₓ <n_y

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          nₓ < n_y

         \frac{c}{v_x} = \frac{c}{n_y}

         v_y <vₓ

therefore the expression is FALSE

ii) If we use the law of refraction, the light, when passing from a medium with a lower start to another with a higher index, must approach the normal one, away from what would be the continuation of the path of the incident ray

so the expression is TRUE

iii) The speed of light is constant in all material media

the statement is FALSE

iv) light approaches normal

Let me clarify that the normal is a line perpendicular to the surface at the point of contact, not the direction of Io.

 the statement of FALSE

8 0
2 years ago
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<h2>Answer: On December 20th, 1951 in Idaho, United States. </h2>

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